Ryan Boren d04dbfb0e5 Clean out layout columns API in WP_Screen. ...

* Move layout column setup into render_screen_meta() so that the number of columns is available earlier.
* Store the user provisioned number of columns in an instance var.
* Access the var with get_columns()
* Move all templates away from the screen_layout_columns global to the get_columns() method.
* Deprecate the global
* Remove the no longer needed check for 'auto' in the user option.
* Cast the user option to an int.

Props griffinjt
fixes #20506


git-svn-id: https://develop.svn.wordpress.org/trunk@20579 602fd350-edb4-49c9-b593-d223f7449a82

2012-04-24 20:46:04 +00:00

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